Cell Biology PhD: How Drosophila cells separate chromosomes in mitosis and female meiosis

Cell Biology PhD: How Drosophila cells separate chromosomes in mitosis and female meiosis

Quick Decision

Strong but verify fit. This four-year University of Edinburgh PhD opportunity examines how chromosome-segregation machinery is built differently in mitosis and female meiosis. It is a close scientific match to Professor Hiro Ohkura’s recent Drosophila work on meiotic spindles, chromosome organization and microtubule-associated proteins. The project description offers three possible directions—phosphorylation/ubiquitination control of kinesins and microtubule-associated proteins; histone modifications and epigenetic chromosome regulation; or kinetochore–microtubule interaction—and proposes genomic/proteomic discovery followed by genetic, RNAi, biochemical, computational and microscopy-based study.

The Darwin Trust competition for October 2027 is open, but the saved materials do not confirm that this topic is attached to a funded place. The Trust advertises up to four years of annual stipend plus University tuition, with applications and references due 6 January 2027 at 12 noon GMT. The key condition is scheme eligibility: applicants must be non-UK nationals who are not eligible for home fees and normally meet the academic and recent-first-degree requirements. The published award pages do not state a numerical stipend. Before investing heavily in an application, contact the supervisor with a CV and confirm eligibility, stipend, exact tuition coverage and which research direction is actually available. The School’s current funding page lists the Darwin Trust round as open S01, S02, S04.

Research Problem and Doctoral Work

What Is Unsolved and Why It Matters

Cells must distribute chromosomes accurately during division. Mitosis passes a genome to daughter cells, while female meiosis prepares chromosomes for inheritance by offspring. Both processes use microtubule spindles and related regulatory proteins, yet their geometry, timing and chromosome behavior differ. The central research problem is to identify how shared components are regulated or assembled in distinct ways across the two settings. Errors in chromosome inheritance can contribute to cancer, infertility, miscarriage and developmental disorders, but work in Drosophila is mechanistic model-system research; it does not by itself establish a human clinical mechanism. The supervisor’s institutional profile describes the large, acentrosomal oocyte spindle as a central problem in the lab’s work S10, and a Wellcome-funded programme identifies open questions about chromosome-local activation, spindle matrix and bipolar spindle assembly in large oocytes S14.

Work, Methods, and Potential Outputs

The supplied project description allows the student to focus on one of three broad lines:

1. Spatial and temporal control of kinesins and microtubule-associated proteins (MAPs) through phosphorylation or ubiquitination.
2. Chromosome regulation by histone modifications and epigenetics.
3. Kinetochore–microtubule interaction.

The described approach starts with genomic and proteomic methods to identify candidate proteins in Drosophila. Functional study may then use genetic analysis and in-vivo RNA interference, with protein-interaction and regulatory mechanisms examined further. The listed toolkit includes biochemistry, genetics, bioinformatics, modelling and microscopy. These are methods named in the project description; no particular software, assay, dataset, sample size or fixed experiment sequence is specified. The student is expected to develop and run an independent project while working closely with the supervisor and colleagues.

A plausible—but not promised—experimental logic would be to compare a candidate’s abundance, localization or activity in mitotic and female-meiotic contexts; perturb it by genetics or RNAi; then quantify chromosome organization, spindle behavior or attachment outcomes using imaging and biochemical or computational analysis. The actual system, measurements, milestones and comparison groups should be agreed with the supervisor before application.

School, Programme and Field Context

The University of Edinburgh is the degree-awarding institution, and the School of Biological Sciences hosts the research. The relevant institutional context is cell biology and genome stability/inheritance, with connected groups studying chromosome organization, meiosis and mitosis. QS ranked Edinburgh 19th worldwide in Biological Sciences in its 2026 subject ranking; this signals subject reputation, not the quality of this particular project or a guarantee of doctoral outcomes S09, S11, S21, S31.

The relevant non-internship Biological Sciences PhD route is a four-year full-time doctorate. The programme describes a supervised research project, first-year probation, regular progress review, training and thesis/viva examination. Its general entry profile is a relevant degree at UK 2:1 level or equivalent, with research experience and understanding of the field; the Darwin Trust has additional scholarship rules. The School’s Graduate School coordinates research study for around 200 postgraduate researchers and offers specialist and transferable-skills training S05, S06.

School facilities include confocal and widefield fluorescence microscopy, electron microscopy, flow cytometry, protein/biophysical resources, proteomics and bioinformatics. These are relevant to the proposed work, but the webpages do not guarantee a particular student’s access, instrument time, hands-on support or project budget; confirm these details directly S07, S08.

Supervisor and Lab Assessment

Supervisor Research Directions

Professor Hiro Ohkura’s research focuses on molecular regulation of meiotic spindles and chromosomes in Drosophila oocytes. His lab page describes work spanning mitosis, meiosis and microtubule regulation and currently invites prospective PhD applicants to make contact. This indicates an active research group and an open contact route, but does not establish a guaranteed funded place or confirm that every advertised direction is available in 2027 S10, S12, S13.

Recent Important Publications

• Wan et al. (2025), Journal of Cell Science. By inducing ectopic microtubule clusters and tracking spindle-associated proteins in Drosophila oocytes, the team identified locally regulated proteins, including Mei-38, and linked PP2A-B56-mediated dephosphorylation to microtubule binding. This gives a direct recent example of spatial and phosphatase-dependent spindle regulation. The binding assay does not establish every protein’s in-vivo role or compare the full mitotic and meiotic programs S15.
• Nieken et al. (2023), Chromosoma. A screen of 3,916 candidates produced 106 reproducible karyosome phenotypes, and follow-up implicated mitochondrial function. It demonstrates the scale of screening and the potential to uncover less obvious pathways. Screening phenotypes require follow-up before a causal mechanism is established S16.
• Repton et al. (2022), PLoS Genetics. Quantitative proteomics and functional analysis linked phospho-dependent 14-3-3 interactions to MAP regulation, including Borealin localization and centromere bi-orientation. This is particularly relevant to the advertised phosphorylation/MAP direction S17.

The lab’s bibliography also lists a 2026 accepted/in-press study on the spindle-matrix protein Slender lobes and Greatwall kinase. Treat its status and conclusions as provisional until the final publication record is checked S19. A 2025 review by Edinburgh cell-biologists provides wider context on meiosis-specific centromere and kinetochore organization, relevant to the third project direction S20. An earlier 2021 study connected the SCF-Fbxo42 ubiquitin ligase to PP2A-B56 and synaptonemal-complex assembly, useful as background for the proposed ubiquitin/phosphorylation theme but outside the recent-paper window S30.

Lab, Resources, and Collaboration Environment

The School’s Genome Stability and Inheritance cluster places this work alongside related chromosome and cell-biology groups. The listed microscopy, proteomics and computational resources could support the described mixed-method design. The public material does not specify lab size, co-supervision, meeting cadence, core-facility allocation, project-specific consumables, or whether the new student would join an existing funded workstream. Confirm these during supervisor contact or interview S11, S07, S08.

Funding, Application, and Living Cost

Award and Application Sequence

The Darwin Trust’s October 2027 competition is currently listed as open. Applicants are instructed to contact a relevant academic and use the Trust’s separate scholarship application. The official procedure calls for two academic or equivalent references; both references are due by 6 January 2027 at 12 noon GMT. Interviews are scheduled for 15–19 March 2027, with interview details expected by 1 March; the intended start is October 2027. The initial Trust stage does not require a University application or English evidence, but an Edinburgh postgraduate application and applicable English evidence are required later. Confirm the sequence and current document requirements before submission S01, S04, S05.

The award is described as up to four years of an annual stipend and University tuition. No numerical stipend is stated on the checked Edinburgh pages. The selection criteria normally require First/Upper Second or equivalent; applicants must be non-UK nationals and ineligible for home fees, and the first Bachelor’s or first Master’s normally must have been completed less than five years before the deadline, with limited discretion for exceptional interruptions. Edinburgh graduates and people who have already started an Edinburgh PhD are excluded. Applicants must later be accepted as University postgraduate students. The criteria also describe possible visa-cost reimbursement and travel contributions for people not resident in the UK, subject to trustee determination, and up to £2,500 for up to two conference/advanced-training awards. Childcare support is conditional; there is no general dependent allowance. Verify how these terms apply to the specific award S02, S03.

Costs and Buying Power

Edinburgh’s published average 2026–27 postgraduate living budget is £18,504 per year, or £1,542 per month. Its monthly illustration includes accommodation/utilities (£978), food (£248), mobile (£12), leisure (£246) and bus (£58); it excludes tuition, study costs, visa and the immigration health surcharge. This is a planning estimate, not an individual budget S23.

The current 2026–27 fee table lists £34,800 per year for overseas full-time Cell and Molecular Biology PhD and selected Biological Sciences PhD variants. The precise programme code and October 2027 fee are not confirmed. The Trust says it covers University tuition for up to four years, but applicants should obtain written confirmation of coverage at the correct international rate S24. UKRI’s 2026–27 minimum stipend of £21,805 is a comparison only and is not evidence of the Darwin Trust amount S25.

Current government charges include a £558 Student visa application fee and a student immigration health surcharge of £776 per visa year, with final IHS calculation depending on visa duration. These rates and immigration routes can change before the October 2027 start. Although the Trust criteria mention visa reimbursement, the amount, timing, and IHS treatment need confirmation S26, S27. Without the award’s stipend figure, an affordability or savings estimate would be speculative.

Applicant Fit and Preparation

Required Background and Skills

General programme guidance points to a relevant life-science degree at UK 2:1 level or equivalent, plus research experience and field understanding. Scholarship selection has its own academic and degree-recency conditions. The project description names methods but does not identify any one of them as a mandatory admission prerequisite. Relevant preparation may include cell or molecular biology, genetics, biochemistry, chromosome biology, developmental biology, microscopy, quantitative analysis or bioinformatics. Applicants should distinguish skills already demonstrated from methods they are ready to learn S03, S05.

Preferred Experience and Suggested Preparation

The project expects initiative and independent development of a research question, alongside close interaction with the supervisor and colleagues. A useful CV and application narrative should show what the applicant personally did in previous research, how data were interpreted, and how setbacks were handled. Review basic spindle/chromosome-segregation biology and be ready to explain why one or two of the proposed directions are compelling. Evidence of quantitative thinking, coding/data handling, microscopy or experimental design may help, but should not be presented as a formal requirement unless the supervisor confirms it.

Contact the supervisor early with a concise CV and focused questions. The Trust recommends two academic or equivalent referees; one should normally be a tutor, and for research applicants the second is preferably a research-group head. The later University application asks for a personal statement, relevant knowledge and training, project/supervisor details, transcripts, references and English evidence where applicable S01, S05, S13.

Research Direction and Career Context

The field is moving toward more precise accounts of where and when spindle components become active, how phosphorylation and ubiquitination coordinate their behavior, and how meiosis-specific centromere/kinetochore structures alter chromosome attachment. Recent work from the lab on locally activated spindle-associated proteins and 14-3-3/MAP regulation makes these questions active rather than purely speculative S15, S17, S20.

Training could build transferable capability in experimental design, genetics, imaging, quantitative analysis, omics interpretation and reproducible data work. Potential settings include academic cell/developmental biology, biotech, imaging or assay development, and broader research roles that value experimental and data skills. The 2026 UK life-sciences assessment projects around 66,000 additional jobs in priority occupations and around 52,000 replacement hires from 2025 to 2035, but these are broad sector projections—not a specific forecast for cell biology PhDs, academic positions or individual employment S28.

Next Actions and Questions to Verify

Before Applying

• Check nationality, home-fee classification, first-degree dates and academic record against the current Trust criteria.
• Send Professor Ohkura a CV and ask whether the lab can host an October 2027 Darwin Trust applicant, which direction is available, and whether the topic has an associated funded place.
• Ask for the stipend amount, duration/payment terms, exact 2027 programme fee code and written confirmation that full international tuition is covered.
• Confirm Trust and University application stages, required documents, referee submission route, and that both references must arrive by 6 January 2027 at 12 noon GMT.
• Clarify whether applicants should nominate a research direction or co-develop one after supervisor contact.

At Interview

• Ask about the first-year research plan, likely comparison systems, experimental versus computational balance, and what constitutes a feasible thesis scope.
• Clarify day-to-day supervision, co-supervision, lab size, meeting cadence and access to microscopy, proteomics, sequencing and bioinformatics support.
• Ask how much of the project is already funded and what consumables, facility fees, training and conference support are budgeted.

Before Accepting an Offer

• Obtain a written breakdown of stipend, tuition coverage, progression conditions, start date and any continuation requirements.
• Confirm visa reimbursement, whether it includes IHS, reimbursement caps/timing, travel support and dependent-related provisions.
• Recheck the final 2027 fee and living-cost assumptions against the actual award and the applicant’s housing plan.

Evidence and Sources

University, Programme, Funding and Facilities

• S01 — October 2027 Darwin Trust application procedure
• S02 — Darwin Trust studentships: eligibility and award
• S03 — Darwin Trust selection criteria and conditions, revised September 2026
• S04 — School of Biological Sciences funded PhD application guide
• S05 — Biological Sciences PhD programme
• S06 — Biological Sciences research training
• S07 — Postgraduate research facilities
• S08 — School research facilities
• S09 — Research at the School of Biological Sciences
• S11 — Genome stability and inheritance cluster
• S21 — QS 2026 Biological Sciences subject ranking
• S31 — University of Edinburgh institutional information

Supervisor, Lab and Research Literature

• S10 — Hiro Ohkura, Centre for Cell Biology profile
• S12 — Ohkura Lab
• S13 — Join the Ohkura Lab
• S14 — Wellcome Discovery Award: meiotic spindle assembly in large oocytes
• S15 — Wan et al. 2025, locally activated spindle-associated proteins
• S16 — Nieken et al. 2023, RNAi screen and meiotic chromosome organization
• S17 — Repton et al. 2022, 14-3-3 regulation of MAPs in oocytes
• S19 — Ohkura Lab publication list
• S20 — Koch and Marston 2025 review of meiosis centromeres and kinetochores
• S30 — Barbosa et al. 2021, SCF-Fbxo42 and synaptonemal-complex assembly

Costs, Immigration and Career Context

• S23 — Edinburgh postgraduate living costs 2026–27
• S24 — Edinburgh postgraduate research fees 2026–27
• S25 — UKRI funded-student support and stipend comparator
• S26 — UK Student visa overview
• S27 — UK immigration health surcharge rates
• S28 — Skills England and Office for Life Sciences sector skills assessment