RESEARCH: CANCER
FOLDING PROJECT #15231 PROFILE

This project looks at how a protein called PTCH1 moves cholesterol around inside cells. This movement helps control the hedgehog pathway, which is important for growth and development. When this pathway gets messed up, it can lead to cancers like medulloblastoma and basal cell carcinoma. By understanding how PTCH1 works, scientists hope to develop new treatments for these diseases.

Note: This TLDR is a simplication and may not be 100% accurate.

This project aims to elucidate the cholesterol transport mechanism in PTCH1, a transmembrane protein responsible for inhibiting SMO in the absence of SHH in the hedgehog signaling pathway by reducing access to ciliary membrane cholesterol.

Dysregulation of this pathway (such as the inability of PTCH1 to transport cholesterol and thereby inhibit SMO) has been linked to various cancers, including medulloblastoma and basal cell carcinoma.

Thus, understanding the mechanisms behind PTCH1 cholesterol transport will allow for therapeutic treatments to target these cancers.

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PTCH1

Patched homolog 1 (PTCH1) is a transmembrane protein.

PTCH1 is a key component of the Hedgehog signaling pathway. It acts as a receptor that binds to SHH and inhibits SMO, preventing uncontrolled cell growth. Dysfunctional PTCH1 can lead to various cancers, making it a target for therapeutic intervention.

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SMO

Smoothened (SMO)

SMO is a transmembrane protein crucial for the Hedgehog signaling pathway. It's activated in response to SHH binding, triggering downstream signaling events that promote cell proliferation and differentiation.

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SHH

Sonic Hedgehog (SHH)

SHH is a signaling molecule that plays a vital role in embryonic development and tissue maintenance. It binds to PTCH1, activating the Hedgehog pathway and regulating cell growth and differentiation.

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Hedgehog signaling pathway

A cellular signaling cascade that regulates development and growth.

The Hedgehog pathway is a crucial signaling network involved in embryonic development, tissue repair, and stem cell maintenance. It's activated by the binding of SHH to PTCH1, leading to downstream effects on gene expression and cell behavior.

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cholesterol transport

The process of moving cholesterol molecules within and between cells.

Cholesterol transport is essential for maintaining cellular membrane integrity and facilitating various biological processes. It involves specific proteins that bind to and move cholesterol molecules across cellular membranes.

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medulloblastoma

A type of brain tumor that arises in the cerebellum.

Medulloblastoma is an aggressive childhood brain tumor originating in the cerebellum. It's characterized by rapid growth and can spread to other parts of the brain and body.

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basal cell carcinoma

A type of skin cancer that originates in the basal cells.

Basal cell carcinoma is the most common type of skin cancer. It develops from abnormal growth of basal cells in the epidermis and typically presents as a pearly or waxy bump on the skin.