RESEARCH: CANCER
FOLDING PROJECT #15237 PROFILE

This project investigates how PTCH1, a protein that normally blocks cancer-causing signals, moves cholesterol. When this process is disrupted, it can lead to cancers like medulloblastoma and basal cell carcinoma. Understanding how PTCH1 works could help develop new cancer treatments.

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 1, a transmembrane protein.

PTCH1 is a protein that acts as a receptor in the hedgehog signaling pathway. It normally inhibits another protein called SMO when there is no hedgehog signal present. Dysfunction of PTCH1 can lead to uncontrolled cell growth and contribute to the development of certain cancers.

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SMO

Smoothened

SMO is a protein that plays a crucial role in the hedgehog signaling pathway. When activated by hedgehog signals, it triggers a cascade of events that promote cell growth and proliferation.

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SHH

Sonic Hedgehog

SHH is a signaling protein that binds to PTCH1 and activates the hedgehog pathway. It is important for embryonic development and tissue regeneration.

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cholesterol transport

The movement of cholesterol molecules within and between cells.

Cholesterol transport is essential for maintaining cell membrane structure and function. Cells utilize specific proteins to move cholesterol across their membranes.

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transmembrane protein

A protein that spans the entire cell membrane.

Transmembrane proteins are embedded within cell membranes and play diverse roles in cellular processes. They can act as channels for transport, receptors for signaling, or structural components.

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ciliary membrane cholesterol

Cholesterol located within the membrane of cilia.

Cilia are hair-like structures on cells that play roles in sensing and movement. Ciliary membrane cholesterol contributes to the structural integrity and function of these organelles.

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cancer

A disease characterized by uncontrolled cell growth.

Cancer is a group of diseases involving abnormal cell proliferation. It can arise from genetic mutations or environmental factors and can spread to other parts of the body.

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medulloblastoma

A type of brain tumor that arises in the cerebellum.

Medulloblastoma is a malignant brain tumor commonly found in children. It originates in the cerebellum, a region responsible for coordinating movement and balance.

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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 typically appears as a pearly or waxy bump and is often found on sun-exposed areas.

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therapeutic treatments

Medical interventions aimed at treating or preventing disease.

Therapeutic treatments encompass a range of approaches, including medications, surgery, and radiation therapy, to address various health conditions.