Entry Information

PART 1: PERSONAL PARTICULARS

Name

Han Tan

Title

Dr

Gender

Male

Recent Photo

Recent Photo

Date of Birth

02/10/1989

Place of Birth

China

Type of Identity Document Held

Passport

HKID / Passport Number

EJ524

Nationality

Chinese

PART 2: CONTACT INFORMATION

Email Address

Email hidden; Javascript is required.

Contact Phone Number

+14438212008

Address

220 East 70th Street, Apt 12E
New York
United States

PART 3: FORUM INTEREST

Name of Recommending Laureate / Academic

Prof_Jeffrey_Friedman

First Discipline to be Joined

Life Science and Medicine

Second Discipline to be Joined

Astronomy

Statement of Purpose to Join the Forum (max. 200 words)

As a postdoctoral researcher in Dr. Jeffrey Friedman’s lab, I am driven by a deep curiosity about how the brain regulates energy balance and behavior. Our recent Nature paper identifying lepR/BNC2 neurons revealed an uncharted neural pathway in leptin signaling, with potential implications for treating obesity and related diseases. This discovery reaffirmed my belief that foundational research can open doors to transformative medical advances.
Being nominated by Dr. Friedman to the Hong Kong Laureate Forum is an incredible honor. I see the Forum as more than an academic gathering—it is a catalyst for global collaboration and visionary thinking. I hope to engage with leading scientists and passionate young researchers across disciplines, to learn from their perspectives, and to challenge and refine my own ideas.
I believe that addressing complex scientific challenges—from metabolic disease to climate-driven health impacts—requires cross-cultural, cross-disciplinary dialogue. The Forum embodies this spirit, and I am excited to contribute my voice while learning from others. I hope to leave not only inspired, but also more connected to a global scientific community committed to discovery, collaboration, and societal impact.

PART 4: ACADEMIC AND/OR RESEARCH INFORMATION

Academic Level / Position

Postdoc

Academic Subject / Research Field

Neuroscience

Current Affiliated University / Institution / Organisation

Rockefeller University

Location

New York

Recommendation 1

Rockefeller University

Recommendation Letter 1

Nomination-Letter_Friedman.pdf

First Academic or Research Referee *

First Referee Name

Jeffrey Friedman

First Referee University

Rockefeller University

First Referee Position

Professor

First Referee Email Address

Email hidden; Javascript is required.

Second Academic or Research Referee

Abstract of Research / Brief Description of Your Current Research Interest (max. 200 words)

Leptin, a hormone derived from fat, is essential for maintaining energy balance through its action on leptin receptor (LepR)-expressing neurons in the brain, particularly the hypothalamus. Despite its importance, the mechanisms by which leptin influences diverse neuronal populations remain poorly understood. Using high-throughput multiplexed snRNA-seq and snATAC-seq, I mapped transcriptomic and chromatin accessibility changes across hypothalamic subregions in response to leptin. This analysis revealed a novel population of LepR neurons marked by Basonuclin 2 (Bnc2), which rapidly suppress appetite by counterbalancing hunger-promoting AGRP neurons, redefining feeding regulation. Additionally, leptin-induced changes highlighted cell-type-specific molecules critical for its function. These findings uncover key neural and molecular pathways for leptin action and provide new therapeutic targets for addressing obesity and leptin resistance.

Would you like to present your Research in Poster Presentation Session and/or Flash Presentation?

Both Sessions

PART 5: OTHERS

Did you participate in the inaugural Hong Kong Laureate Forum?

N/A

How Did You Know About the Forum?

Professor